1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef FD_GUARD_H 17 #define FD_GUARD_H 18 19 namespace OHOS { 20 namespace Storage { 21 namespace DistributedFile { 22 class DfsuFDGuard final { 23 public: 24 DfsuFDGuard() = default; 25 explicit DfsuFDGuard(int fd); 26 DfsuFDGuard(int fd, bool autoClose); 27 28 DfsuFDGuard(const DfsuFDGuard &fdg) = delete; 29 DfsuFDGuard &operator=(const DfsuFDGuard &fdg) = delete; 30 31 DfsuFDGuard(DfsuFDGuard &&fdg) = delete; 32 DfsuFDGuard &operator=(DfsuFDGuard &&fdg) = delete; 33 34 operator bool() const; 35 36 ~DfsuFDGuard(); 37 38 int GetFD() const; 39 void SetFD(int fd, bool autoClose = true); 40 void ClearFD(); 41 42 private: 43 int fd_ = -1; 44 bool autoClose_ = true; 45 }; 46 } // namespace DistributedFile 47 } // namespace Storage 48 } // namespace OHOS 49 #endif